17
Program 128- Burner requirement and solar power system (or feed pump)
Program 128: Pump A1 runs when:
S1 is greater than the threshold min1 and S1 is greater than S2 by the difference diff1
and S2 has not exceeded the threshold max1.
Output A3 switches on when S4 falls below threshold min3.
Output A3 switches off (dominant) when S3 exceeds max3.
A1 = S1 > (S2 + diff1) & S1 > min1 & S2 < max1
A3 (on) = S4 < min3 A3 (off) = S3 > max3
All programs +1:
The burner requirement (A3) only occurs via sensor S4.
Output A3 switches on when S4 falls below threshold min3.
Output A3 switches off (dominant) when S4 exceeds max3.
A3 (on) = S4 < min3 A3 (off) = S4 > max3
All programs +2:
In addition, pump A1 switches between sensors S4 and S2 (such as oil boiler - buffer -
cylinder system) when difference diff2 is reached.
Pump A1 runs when:
S1 is greater than the threshold min1 and S1 is greater than S2 by the difference diff1
and S2 has not exceeded the threshold max1,
or S4 is greater than threshold min2 and S4 is greater than S2 by the difference diff2
and S2 has not exceeded max2.
A1 = (S1 > (S2 + diff1) & S1 > min1 & S2 < max1)
or (S4 > (S2 + diff2) & S4 > min2 & S2 < max1)
Required settings:
max1 … limit CYL S2 A1
max3 … burner req. off CYL S3 A3
min1 … switch-on temp. coll. S1 A1
min2 … see all programs +2
min3 … burner req. on CYL S4 A3
diff1 … collector S1 – CYL S2 A1
diff2 … see all programs +2
S1
min1
S2
max1
diff1
A1
Burner
A3
S4 min3
S3 max3
A1
A3
S1
S2
S4
S3
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